Search for: [Abstract = "A modification of digital controller algorithms, based on the introduction of a virtual reference value, which never exceeds active constraints in the actuator output is presented and investigated for some algorithms used in single\-loop control systems. This idea, derived from virtual modification of a control error, can be used in digital control systems subjected to both magnitude and rate constraints. The modification is introduced in the form of on\-line adaptation to the control task. Hence the design of optimal \(in a specified sense\) digital controller parameters can be separated from actuator constraints."]

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